<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="/m1" method="post">
<!--        这里指定是post方法，所以m1方法不能用get-->
        <input type="submit" value="提交">
    </form>

</body>
</html>